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高锰铸铁是国外资料介绍的一种材料,其特点是含锰量至少超过含硅量0.2％以上,它的基体组织为珠光体,具有组织较细、强度较高、内应力较小、缩孔缩松倾向小、耐磨性好等优点。我厂自1967年开始试验以来,已在生产中应用近十年,实践证明效果良好。在此基础上我们又进一步加铜,减少了它的白口倾向,使之不仅适用于大件,而且还可用于薄壁件,且能承受高压及高真空以代替加镍铸铁,现将试验情况简介如下: 一、高锰铸铁 1.配料及化学成分由于我厂冲天炉设有前炉,一部分铁水会与非高锰的铁水混合。因此,
High manganese cast iron is a material introduced by foreign materials, which is characterized by manganese content of at least more than 0.2% of silicon content, and its matrix structure is pearlite, with fine structure, high strength, internal stress smaller, shrinkage Hole shrinkage tendency, good wear resistance. Since our plant started its experiment in 1967, it has been used in production for nearly ten years and proved to be effective in practice. On this basis, we further add copper, reducing its tendency to white mouth, so that it applies not only to large, but also for thin-walled parts, and can withstand high pressure and high vacuum instead of plus nickel cast iron, now the test The brief introduction is as follows: First, the high manganese cast iron 1. Ingredients and chemical composition As a former cupola furnace with a former furnace, part of the hot metal with non-high-manganese mixed with hot metal. therefore,